Abstract: A fastener assembly for mounting to a panel to allow connection of associated structures thereto comprises a fastener receiving and retaining member formed of plastic and including an elongated sleeve-like body having a head end and a terminal end with a central aperture extending axially therebetween. A flange extends radially from the head end and a fastener receiving bore is carried at the terminal end in alignment with the central aperture. Radially extending retaining elements are carried on the sleeve-like body. A first set of openings is formed through the flange and a second set of openings is formed through the sleeve-like body at a location closely adjacent the flange. A sheet of temperature expandable sealer material is carried on the sleeve-like body adjacent the flange such that when the said member is mounted to a panel by extending the sleeve-like body through an opening in the panel the sheet of expandable sealer material is compressed between the flange and the panel.

Abstract: An anchor bolt has locking elements arranged over a part of the outer surface and formed as radially projecting lugs which are spaced circumferentially and axially from one another. Therefore a good mixing of a compound mass and reduction of the driving-in resistance is obtained. Therefore the outer diameter measured over the lugs of the anchor bolt can be matched approximately to the diameter of the drilled hole. Simple and inexpensive manufacture of the anchor bolt can be provided by powdered metal injection molding method using a system of binders with subsequent removal of the binders and sintering.

Abstract: An adhesively secured fastener for use with a wide variety of substrates which provides a safer and more effective method of storing, transporting, delivering and using a quick setting adhesive while protecting against contact of the adhesive contained therein with the user of the fastener, and having a pressure sensitive adhesive for holding the fastener in place while the quick setting adhesive cures.

Abstract: A fixture (structural element) is readily mounted to a surface of a substrate (such as concrete) by embedding and adhering an internally-threaded anchoring element (sleeve) in a hole in the substrate. Preferably, the anchoring element is recessed below the surface of the substrate ("embedded"). To aid in inserting the anchoring element into the hole, an insertion tool may be employed. The system is re-usable, in the sense that the fixture can be removed and replaced, or the fixture can be removed and the hole in the substrate covered. In the latter case, a gauge element may be inserted into the anchoring element prior to sealing over the hole. A template is provided to ascertain the depth that the anchoring element is embedded within the substrate, as determined by the cross-sectional dimension of the gauge element at the surface of the substrate. A wedge-element is also described for fitting to the end of a threaded rod, for forming an anchor stud.

Abstract: An attachment anchor assembly for securing a component (15) to a base material (U) includes an axially extending anchor rod (11) having an axially extending anchoring region and a centering sleeve (18) laterally enclosing the anchor rod in a sealing manner and spaced from the anchoring region. A sealing element (19) is located between the centering sleeve (18) and the anchoring region and laterally encloses the anchor rod (11) in a sealing manner. The sealing element (19) has a transverse sealing surface facing towards the anchoring region and the sealing surface can be displaced axially towards the centering sleeve.

Abstract: An anchor sleeve and bolt assembly adapted to chemically fasten a fixture or other object having a mounting hole to a masonry body. The assembly compresses a bolt provided with a head engageable by a torque tool and a shank extending from the head, an anchor sleeve threadably received on the shank and extending therefrom to define a void between the end of the shank and the end of the sleeve, and a deformable collar interposed between the head of the bolt and the sleeve. To install the assembly, it is inserted through the fixture mounting hole into a hole drilled in the masonry body whose depth is such that the bolt head then lies adjacent the fixture. Deposited in the drilled hole is a charge of an uncured flowable bonding agent which when the assembly is inserted therein, then spreads into the space between the sleeve and the bank of the drilled hole whereby when the agent is cured and hardened, the sleeve is then chemically anchored in the hole.

Abstract: An anchor assembly for use in adhesively bonding an anchor consisting of a threaded anchor member having an adhesive release coating its threaded portions and having a hollow end dimensioned to receive the threaded portion connected to the end of the threaded portion and extending from it to provide a space within the adhesive in which the threaded portion of the assembly can be contained.

Abstract: A two-piece hood support bumper of such construction that it can be set at an infinitely determinable height by the weight and/or position of the hood itself during the process of installing the support member, and whereby the support member is permanently set in that position by an adhesive carried within the two-piece member prior to the final position being set. A method of installing a vehicle hood assembly by providing a self-height adjusting support member intermediate the ends of the hoods and at both side edges, and which is set in its final position after bringing both ends of the hood into a condition flush with the adjoining body panels and wherein the height of the support member is established by the hood itself as it is brought to rest on the front hood bumpers.

Abstract: A fastening system includes a fastener having a threaded shank and a head, the head having upper and lower surfaces and depending integrally from the lower surface of the head, the lower surface including a channel concentric relative to the shank. The shank of the fastener includes its first channel extending along a length and a second channel also extending along a length of the shank. Within the first shank channel is provided a bonding base material, and within the second shank channel is provided a bonding activator material. Rotation of the fastener within a medium to be fastened will cause an extrusion of the bonding base and activator materials into the annular channel in which a curing reaction therebetween will occur, effectively bonding the lower surface of the fastener head to an exterior surface of the medium to be fastened.

Abstract: A piercing grommet which pierces an insulation blanket. A snap-on retainer slides over a spiked portion of the piercing grommet and snaps in place adjacent the bottom of the spike. The spike can then be removed. A seal is created by contact adhesive between the insulation blanket and the grommet in order to prevent moisture ingress.

Abstract: There is disclosed an aerospace fastener system in which a threaded bolt fastener is secured with a free spinning threaded nut or collar and in which the engagement of the threaded members is fixedly secured by an adhesive. In this invention, the length of the bolt fastener is preselected such that when the fastener is applied in a maximum grip condition, the end of the bolt fastener does not project beyond the top surface of the nut or collar. In this invention, the bolt fastener can even be slightly shorter than the length necessary to reach the top surface of the nut or collar when the fastener still meets the tensile load requirement of the specific application. Preferably the adhesive also includes an ultra-violet light fluorescent pigment so that upon ultra-violet illumination, the correct application of the fastener can be easily observed.

Abstract: A system for inserting and retaining a fastener between two generally parallel spaced apart webs formed on a first workpiece. The fastener is inserted using ultrasonic energy to deform the material of the webs to engage an axial force resisting portion and a torsional force resisting portion of the fastener with the material of the webs. The present invention includes the fastener which is constructed for use in the system, as well as an article employing the fastener for attaching the first workpiece, to which the fastener is attached, to a second workpiece.

Abstract: There is disclosed an aerospace fastener system in which a threaded bolt fastener is secured with a free spinning threaded nut or collar and in which the engagement of the threaded members is fixedly secured by an adhesive. The length of the bolt fastener is preselected such that when the fastener is applied in a maximum grip condition, the end of the bolt fastener does not project beyond the top surface of the nut or collar, or is even slightly shorter than the length necessary to reach the top surface of the nut or collar. There is also disclosed a blind fastener system in which the adhesive is applied to the threads of the core screw of the blind fastener which are engaged upon installation of the fastener.

Abstract: The anchor for anchoring in a drilled hole in concrete via a joining composition, includes a threaded bolt consisting of a straight shank portion having an expander cone at one end thereof to be inserted in the drilled hole and a threaded portion at the other end, the expander cone having an outer surface and an end face and widening toward the end face; an expandable sleeve arranged on the threaded bolt enclosing the expander cone and structured to be expanded by the expander cone and a plastic covering on the end face and the outer surface of the expander cone and an adjoining part of the straight shank portion. The complete plastic covering over the expander cone and the adjoining part of the straight shank portion ensures that the joining composition does not bond the expandable sleeve to the threaded bolt, thus hindering subsequent expansion of the expandable sleeve by the expander cone due to crack formation at the drilled hole.

Abstract: A nut plate fastener retains a screw inserted through an aperture formed in a panel. A double-sided adhesive tape may be adhered to one face of the fastener to mount in the panel aperture. The nut plate fastener consists of an integral member and includes a bottom plate with a cone-shaped ring-liked raised screw impression to receive and retain a screw, and a top plate portion connected to the bottom plate. The screw when in the fastened position is confined between the top and bottom plates as to be isolated from objects contained within the panel and adjacent the nut plate fastener. Three tabs project from the bottom face of the bottom plate and project through the tape which centers the fastener in the panel aperture.

Abstract: An adhesively secured fastener for use with a wide variety of substrates which provides a safer and more effective method of storing, transporting, delivering and using a quick setting adhesive while protecting against contact of the adhesive contained therein with the user of the fastener.

Abstract: A fastener has multiple secondary threads intertwined with a primary thread installable in a thermoplastic workpiece. A method and die are arranged for fabricating such a fastener. The fastener comprises a threaded shank portion having a primary thread of a desired form and a driver head attached thereto. At least one secondary thread is intertwined with the primary thread. In accordance with one embodiment of the invention, an outer surface of the fastener may be heated to a preselected Curie temperature during the installation of the fastener into a workpiece. The preselected Curie temperature enhances the flow of the thermoplastic material around the fastener while the fastener is being installed in the workpiece. A coating material having a particular desired Curie temperature may be applied to the fastener to produce desired driving characteristics.

Abstract: In the space shuttle, a cargo bay storage rack was required which was to be manufactured from a metal-plastic composite and bolted to a cargo structure. Following completion, utilization of the rack was disallowed due to tolerances, that is, the size differences between the outside bolt diameter and the inside hole diameter. In addition to the space shuttle problem there are other close tolerance requirements for bolts. Such environments often benefit from close tolerance bolting. Frequently such fabrication is not cost effective. Consequently there is a need for means of achieving close tolerances between bolts and bolt holes. Such means are provided herein. After compressing the elements together a strong rigid plastic, ceramic, or ceramic plastic fluid is forced into a channel extending through the bolt.

Abstract: A construction anchor for mounting an object on a structure of masonry, concrete, metal or the like includes a metal anchoring portion and a plastic cap. The anchor is adapted to be inserted, metal end first, into a pre-drilled adhesive-filled hole. The cap has a flange that is larger than the hole diameter, so that the anchor may be inserted and seated in the hole at a consistent depth. When the adhesive has set, a screw or bolt is inserted through the plastic cap to engage the threads in an internal bore in the anchoring portion. The plastic cap serves not only to determine the depth of the anchor in the hole, but also to prevent adhesive and other material from entering the threaded interior of the anchor prior to use.

Abstract: A fastener suitable for joining two or more plastic or metal panels together under automated manufacturing conditions. The fastener has a piercing end for forming its own passage through the panels so as to avoid the need for a pre-drilled hole. Disposed near the piercing end are one or more rigid barbs which extend obliquely from the shank toward the head of the fastener. The barbs create an interference with the adjacent panel to secure the panels. The fastener further incorporates an adhesive strip which serves to adhere the fastener to the panels in a manner that prevents both rotation and axial displacement of the fastener relative to the panels. The fastener is particularly adapted for permanently joining two or more panels where access to both sides of the joined panels is either impracticable or undesirable, such as when a body panel of an automobile is to be fastened to the automobile's frame.

Abstract: A screw or nail sustainer comprising a tube having a chamber for inserting a screw or nail into a base opening of the chamber, at least one fluid flow opening formed with a base portion of the tube for injecting a liquid resin, and at least one ring-like projection formed with a portion of the tube remote from the fluid flow opening toward a tip of the tube to project from and to surround a periphery of the tube. A plurality of bag forming wings are provided with the tip portion of the tube to project radially. The bag forming wings are bent toward the base portion of the tube when the screw or nail sustainer is inserted into a hole of a board so that a bag like portion may be made in cooperation with the outer surface of the tube so as to make an opening toward the base portion of the tube.

Abstract: A concrete insert having a U-shaped part with two legs and a bridge between them, the bridge having a hole in which an internally threaded coupling is engaged with a friction fit, a bolt threaded in the coupling to extend above the bridge so that the position of the coupling with respect to the U-shaped element can be set by tapping the bolt and held by friction against the side of the hole in the bridge.

Abstract: An anchor, preferably formed of metal, has at least one flat side and is adapted to be forcefully inserted axially into a complementary shaped aperture formed in an object made of a softer material than the anchor, such as plastic. The anchor is adapted to receive an attachment fastener in a central threaded opening formed in the anchor, after the anchor is forcefully seated in the aperture of the object. A plurality of angled barbs extend outwardly from the body and cut into the object to resist pullout of the anchor once seated in the object, with the flat side resisting rotation of the anchor with respect to the body. The anchor may be formed with flat corner areas which align with rounded corners of the object aperture. In the alternative, generally circular stress relief areas are formed in the corners of the aperture which align with shape square corners of the anchor.

Abstract: The invention herein is a roofing fastening device, with an optional liquid sealer to facilitate the process of affixing rectangularly-shaped sheets or rubber roofing material to the upper surface of a roof. Specifically, the invention is a longitudinally disposed fastening member in the general form of a screw or like member which is adapted to be inserted through the upper surface of the rubber roofing sheets and thence through the upper surface of the roof structure, serving thereby to anchor the rubber roofing sheets to the fixed roof structure. The fastening device has a longitudinally extending centrally located chamber which is coaxially aligned with the longitudinal central axis of the fastening member, and this chamber has a plurality of laterally disposed openings which extend from the chamber to the outer surface of the fastening member, said chamber being adapted to receive a liquid sealant at an opening in the upper surface and disperse same through such lateral openings.

Abstract: A thread-forming fastener and method of installation thereof are provided for use with a workpiece constructed of a thermoplastic material. The fastener includes a threaded shank having a thread of desired form and a driver head portion. A metallic coating of a predetermined composition is applied to the threaded shank. The composition of the coating is selected for its effective Curie temperature for heating the fastener during application of the fastener to the thermoplastic workpiece. The heated surface enhances plastic flow of the thermoplastic material during thread forming and effectively reduces the required drive torque for thread forming by the fastener while increasing the holding torque. The fastener is preferably also formed with a spaced thread defining an unthreaded surface portion running adjacent to the thread at substantially the root diameter of the thread.

Abstract: Thermoplastic polymer locking elements are formed on threaded fasteners to provide a range of self-locking torque characteristics. The thermoplastic resins are of the type that crystallize during cooling from the molten state.The crystallizable polymers are preferably applied in film form to preheated threaded fasteners. By correlation of the preheat temperature, the length of time during which the molten polymer is allowed to melt and flow onto the thread surfaces, and the rate of cooling of the assembly, the geometry of the locking element and the degree of crystallinity of the polymer are controlled.

Abstract: A roof membrane anchoring system is provided of the non-penetrating type, including a base member with an enlarged head carried by an upstanding stem, a disc, and a socket cap which includes a top, depending legs, and feet carried at the bottoms of the legs, the cap being of somewhat resilient material. A clamp is provided for constricting the legs after the socket cap is placed over the head. When uplift forces on the membrane act to deform the disc, it acts against surfaces of the feet of the socket cap, to urge the feet together, thereby providing greater security of the socket cap during periods of high wind velocity. The base member has a passage for insertion therethrough of a fastener, the passage including a quantity of self-curing adhesive material which is cured after insertion of the linear fastener, the adhesive material serving to adhere the linear fastener either to the base member or to a holding element for the linear fastener, or both.

Abstract: A threaded fastener having a deposit of a fluid polymerizable resin in the bottoms of the thread grooves, a fluid polymerizing agent overlying the resin in the thread grooves, and a strong non-tacky protective film covering the agent. The fluid resin and agent have therebetween a barrier film as a result of polymerization of the resin where it contacts the polymerizing agent. Preferably, the fluid resin and agent deposit includes abrasive particles, such as table salt to enhance mixing when the fastener engages a mating threaded member. In production, the protective film is applied as an aqueous solution of PVA, which is rapidly converted to the non-tacky film by the application of a desiccant powder such as a derivative of guar gum.